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Pengkumta Fasteners, a reputable manufacturer and supplier located in Bangkok, Thailand, specializes in crafting top-notch Stainless Steel 347H Nuts. Renowned for their precision engineering and exceptional durability, these nuts are built to meet the rigorous demands of various industries. With state-of-the-art facilities and stringent quality control measures, Pengkumta Fasteners guarantees outstanding resistance to high temperatures, corrosion, and oxidation in their products. The Stainless Steel 347H Nuts provided by the company are extensively utilized in petrochemical, power generation, and heat treatment applications, making them a trusted choice for industries in need of reliable fastening solutions in tough environments.
These Stainless Steel 347H Nuts are primarily made up of iron, chromium (17–19%), and nickel (9–13%), with niobium added to prevent carbide precipitation at elevated temperatures. Thanks to their higher carbon content compared to the 347 grade, they deliver enhanced creep strength and heat resistance. These nuts boast a tensile strength of up to 515 MPa and a yield strength of 205 MPa, along with remarkable toughness and hardness. Their mechanical properties ensure they can withstand thermal cycling and conditions prone to oxidation, providing secure fastening even during extended exposure to high temperatures.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 347H | min. | 0.04 | – | – | – | – | 17.0 | 3.00 | 9.0 | – |
| max. | 0.10 | 2.0 | 1.00 | 0.045 | 0.030 | 19.0 | 4.00 | 13.0 | – | |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 347H | 515 | 205 | 40 | 92 | 201 |
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts. |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Stainless Steel 347H Nuts are widely sought after for applications that demand heat and corrosion resistance. They find common use in power plants, chemical processing, heat exchangers, and boiler equipment due to their ability to endure prolonged exposure to high temperatures. In the petrochemical and refinery sectors, they are favored for securing pipelines and components that deal with hot gases and corrosive fluids. The aerospace and marine industries also depend on these nuts for their strength and resistance to oxidation. Their durability and stability make them vital in critical fastening applications across various demanding sectors.
We maintain strict quality standards for our stainless steel 347H nuts, modeled by our carefully designed packaging. Our commitment extends to advanced packaging, with trade. We provide EN 10204/3.1b certificates, PMI test certificates, and 100% radiography test reports. Additionally, third-party inspection certificates further affirm our dedication to quality and reliability. We ensure that our products are securely protected during transit, arriving in optimal condition to meet the precise requirements of our customers.
Pengkumta Fasteners is a leading manufacturer and supplier of high-quality fasteners in Bangkok, Thailand, with over 8 years of experience serving global industries.
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